Rocket attack behind ammo depot blast

A guard walks past the perimeter of the now destroyed munitions dump

SPIN BOLDAK, Afghanistan (CNN) --Officials in Afghanistan say a rocket attack triggered a deadly munitions explosion early Friday in the southern Afghan town of Spin Boldak that killed at least 19 people and injured dozens more.

The massive and extended explosions sent shock waves through Spin boldak and was felt as far as Chaman in Pakistan.

Victims include women, children and Afghan soldiers. Officials say they are still trying to determine who fired the rocket and why.

A World Food Programme official, Sikendar Khan, said two witnesses he talked with said a shell fired from Pakistan hit the depot, setting off the explosions.